Results 111 to 120 of about 11,247 (202)

Intrinsic pH chemosensitivity of acutely dissociated medullary serotonergic and retrotrapezoid neurones

The Journal of Physiology, EarlyView.
Abstract figure legend Central respiratory chemoreceptors (CRCs) are critical for maintaining normal systemic levels of pH and PCO2. A CRC must respond to pH via intrinsic mechanisms. Here we quantified intrinsic chemosensitivity of medullary 5‐HT neurones and retrotrapezoid nucleus (RTN) neurones using acute dissociation.
Yuanming Wu, Eduardo Bravo, George Bradley Richerson   +2 more
wiley   +1 more source

Purification and Characterization of Tetrodotoxin-binding Substance in Shore Crab Hemolymph [PDF]

, 2001
P(論文)テトロドトキシン(TTX)は古くからフグ毒の主成分として知られる。1964年にカリフォルニアイモリの毒がTTXに同定されて以来,これまでに微生物から両生類にいたる多種の生物に存在することが明らかにされてきた。TTXは神経細胞のNaチャンネルを選択的にブロックして,神経の興奮を阻害する作用を持つ神経毒であるとされている。TTXを保有しない一般の硬骨魚類のTTXの腹腔内投与に対する抵抗性はマウスと同程度の体重20g当たり約1MUである。これに対して ...
楠田, 理一, 河原, 栄二郎, 26304, 26303, 松居, 隆, 26306, 26305, 金辻, 宏明, 山森, 邦夫, 26307   +9 more
core  

Electrophysiological properties of the dorsal motor nucleus of the vagus motoneurones controlling airway mucus secretion in rats

The Journal of Physiology, EarlyView.
Abstract figure legend Acidosis depolarises parasympathetic respiratory motoneurones in the dorsal motor nucleus of the vagus (DMV) and increases their firing frequency by reducing TWIK‐2 channel conductance. Acidosis also activates astrocytes, which further enhance neuronal excitability through NMDA receptor‐dependent glutamatergic signalling.
Daniel P. de Souza, Renato W. Martins Sá, Luiza Henrique de Souza, Fernando S. Ramalho, Davi J. A. Moraes   +4 more
wiley   +1 more source

Inhibition of aminopyridine-induced contractile activity in skeletal muscle by tetrodotoxin and by magnesium

, 1979
The effects of tetrodotoxin and magnesium have been studied on aminopyridine-induced contractile activity seen in the absence of nerve stimulation.
Marshall, Ian G., Durant, Nicholas N., Lambert, Jeremy J.   +2 more
core   +1 more source

Impaired Motor Function in a Zebrafish Stathmin‐2 Knockout Model

Developmental Neurobiology, Volume 86, Issue 4, October 2026.
ABSTRACT Stathmin‐2 (STMN2) is a microtubule‐associated protein that plays a role in the stability of microtubules in axons of the nervous system of animals. In this study, we generated a novel zebrafish STMN2 knockout (KO) model. STMN2 is represented by two genes in the zebrafish genome: stmn2a and stmn2b.
Tyler J. N. Gurberg, Ziyaan A. Harji, Christian J. Rampal, Joséphine Sacy‐Richer, Amy Wang, Esteban C. Rodríguez, Gary A. B. Armstrong   +6 more
wiley   +1 more source

Serotonin engages divergent 5‐HT receptor pathways for cell type‐resolved modulation of prefrontal layer 5 microcircuits

British Journal of Pharmacology, Volume 183, Issue 19, Page 5832-5853, October 2026.
Serotonin differentially modulates layer 5 mPFC microcircuits through cell type‐specific pre‐ and postsynaptic receptor pathways. Presynaptic 5‐HT1BRs suppress glutamate and GABA release, whereas presynaptic and postsynaptic 5‐HT3ARs enhance fast‐spiking interneuron activity, whilst distinct pyramidal neuron subtypes exhibit divergent 5‐HT1AR‐ and 5 ...
Ramya Rama, Guanxiao Qi, Gabriele Radnikow, Danqing Yang, Dirk Feldmeyer   +4 more
wiley   +1 more source

Total Synthesis of Tetrodotoxin and 9-epiTetrodotoxin

The original dataset of "Total Synthesis of Tetrodotoxin and 9-epiTetrodotoxin", manuscript#: NCOMMS-23 ...
Peihao Chen (16019733), Yan Wang (16019739), Peng Cao (11598799), Jing Wang (16019736), Yuzeng Sun (16019740), Shuangfeng Zhang (16019737), Qingcui Wu (11585447), Songlin Bai (16019743), Xinyu Cheng (16019745), Qi Xiangbing (10913622)   +9 more
core   +1 more source

Photovoltaic Stimulation of Mouse and Pig Retina With Pyrolytic Carbon Microelectrodes Integrated on High‐Density Silicon Solar Cell Arrays

Advanced Healthcare Materials, Volume 15, Issue 36, 25 September 2026.
In this study, we fabricate photovoltaic retinal implants with pyrolytic carbon electrodes and test their ability to stimulate mouse and pig retinas when illuminated with near‐infrared light. We find increased spiking activity in both animal models compared to spontaneous activity and TTX controls and analyze the spike amplitude, latency and frequency.
Akihiro Matsumoto, Pratik Kusumanchi, Jesper Guldsmed Madsen, Asbjørn Cortnum Jørgensen, Gisele Alves dos Reis Benatto, Sune Thorsteinsson, Peter Behrensdorff Poulsen, Keisuke Yonehara, Toke Bek, Stephan Sylvest Keller, Rasmus Schmidt Davidsen   +10 more
wiley   +1 more source

Voltage-dependent action of tetrodotoxin in mammalian cardiac myocytes

, 1986
Single Na+ channel currents have been examined in isolated guinea pig ventricular myocytes using the patch-clamp technique. The effects of lidocaine, extracellular calcium [(Ca)o], and tetrodotoxin on patch Na+ channel availability were assessed using ...
K. S. Lee, P. M. Vassilev, J. R. Hume, R. W. Hadley   +3 more
core   +1 more source

Palmitoylation of PSD‐95 Orchestrates Learning‐Dependent Metaplasticity in the Amygdala and Fear Memory

Advanced Science, Volume 13, Issue 52, 18 September 2026.
This study reveals that fear learning specifically triggers PICK1/DHHC2‐dependent palmitoylation of PSD‐95 in the lateral amygdala. Fear conditioning induces the dissociation of DHHC5 from PSD‐95 and the association of PSD‐95 with DHHC2. DHHC2‐mediated palmitoylation of PSD‐95 is required for synaptic transmission and underlies fear learning–induced ...
Zu‐Cheng Shen, Yu‐Xuan Weng, Zhi‐Xuan Xia, Yue‐Ling Zhao, Qian‐Qian Ding, Si‐Ying Wang, Ting Cao, Xuan‐Ying Chen, Wu‐Cheng Tao, Shen Lin, Zhou Chen, Yi‐Xiao Luo   +11 more
wiley   +1 more source